Originally Posted by Stan_R80/7
I have never had a rod knock under acceleration. If the knock happens under light load (i.e. constant speed), or it knocks after the engine warms up when stationary and letting the clutch out with the rear brake engaged - I would pull the cylinders and inspect the rod crank journals. The most daunting part of pulling the cylinders is removing the exhaust if it has not been off in a good while. Inspecting the journals is the only way to know for sure. Good luck!
You do not need to pull the exhaust to pull the heads.
It's worth trying the exhaust nuts with the heads on the bike, and use heat. But if cutting the nuts is in order it's easier to pull the head and do the operation on the bench. Cut the nuts in several places, don't go all the way through so you never touch the threads in the heads and then fracture them.